Answer:
slope = 0
Step-by-step explanation:
[tex]m=\frac{change in y}{change in x}[/tex]
[tex]m=\frac{4-4}{2-1}[/tex]
[tex]\frac{0}{1}[/tex]
Divide 0 by 1 .
m = 0
good luck, hope this helps :)
